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SSC Sample Paper SSC CGL - Sample Paper-23

  • question_answer
    The average weight of 20 students in a class is increased by 0.75 kg when one of the student weighting 30 kg is replaced by a new student. Weight of new student (in kg) is

    A) 35                                

    B) 40

    C) 45        

    D) 50

    Correct Answer: C

    Solution :

    Change in average weight of 20 students             \[=20\times 0.75\,kg\]             \[=15\,kg\] \[\therefore \] Weight of the new student \[=(30+15)\,kg\]             \[=45\,kg\]                    


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